A total of 54 policemen completed the experiment. Policemen in group 1 received feedback about their productivity (number of citations) during the first 2 weeks of the experiment follow by no feedback about productivity during the second 2 weeks of the experiment. Policemen in group 2 received no feedback about their productivity during the first 2 weeks of the experiment followed, by feedback about productivity during the second 2 weeks of the experiment. At the end of the experiment, all policemen were given the achievement items of the Edwards Personal Preference Schedule and achievement scales of the California Psychological Inventory. Data were anayzed with a split plot two-way analysis of variance with the two experimental groups as the independent groups factor and the two phases (feedback versus no feedback) as the repeated measures factor. Records for citations issued by each policeman were obtained for the year before the experiment was performed. Findings show that 48 out of 54 policemen increased the their ticket output relative to the year before the experiment, although this was based on whether they were being observed, not on the feedback that they had experienced. The experiment suggests that a police department can increase the citation output of officers without issuing a direct order, thus avoiding possible adverse public reactions. A review of the literature on feedback supports the findings of this study. Tabular data, a sample feedback sheet, and 80 references are included.